H R 



PiF H FHFHH 



Quadrat-bisect showing root systems of shrubs and herbs of the forest floor. This was made along 

 the front edge of the quadrat shown in plate 27 B : H, Haplopappus parryi; R, Rosa acicularis; 

 V\, Pinus flexilis; F, Fragaria virginiana; C, Chamomerium angustifolium; P, Picea engelmanni. 



